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.gdb/dashboard  view on Meta::CPAN

                'default': '32'
            },
            'style_low': {
                'default': '1;30'
            },
            'style_high': {
                'default': '1;37'
            },
            'style_error': {
                'default': '31'
            }
        }

# Common -----------------------------------------------------------------------

def run(command):
    return gdb.execute(command, to_string=True)

def ansi(string, style):
    if R.ansi:
        return '[{}m{}'.format(style, string)
    else:
        return string

def divider(label='', primary=False, active=True):
    width = Dashboard.term_width
    if primary:
        divider_fill_style = R.divider_fill_style_primary
        divider_fill_char = R.divider_fill_char_primary
        divider_label_style_on = R.divider_label_style_on_primary
        divider_label_style_off = R.divider_label_style_off_primary
    else:
        divider_fill_style = R.divider_fill_style_secondary
        divider_fill_char = R.divider_fill_char_secondary
        divider_label_style_on = R.divider_label_style_on_secondary
        divider_label_style_off = R.divider_label_style_off_secondary
    if label:
        if active:
            divider_label_style = divider_label_style_on
        else:
            divider_label_style = divider_label_style_off
        skip = R.divider_label_skip
        margin = R.divider_label_margin
        before = ansi(divider_fill_char * skip, divider_fill_style)
        middle = ansi(label, divider_label_style)
        after_length = width - len(label) - skip - 2 * margin
        after = ansi(divider_fill_char * after_length, divider_fill_style)
        if R.divider_label_align_right:
            before, after = after, before
        return ''.join([before, ' ' * margin, middle, ' ' * margin, after])
    else:
        return ansi(divider_fill_char * width, divider_fill_style)

def check_gt_zero(x):
    return x > 0

def check_ge_zero(x):
    return x >= 0

def to_unsigned(value, size=8):
    # values from GDB can be used transparently but are not suitable for
    # being printed as unsigned integers, so a conversion is needed
    return int(value.cast(gdb.Value(0).type)) % (2 ** (size * 8))

def format_address(address):
    return '0x{:016x}'.format(address)

# Dashboard --------------------------------------------------------------------

class Dashboard(gdb.Command):
    """Redisplay the dashboard."""

    def __init__(self):
        gdb.Command.__init__(self, 'dashboard',
                             gdb.COMMAND_USER, gdb.COMPLETE_NONE, True)
        self.enabled = True
        # setup subcommands
        Dashboard.EnabledCommand(self)
        Dashboard.LayoutCommand(self)
        # setup style commands
        Dashboard.StyleCommand(self, 'dashboard', R, R.attributes())
        # setup events
        gdb.events.cont.connect(lambda _: self.on_continue())
        gdb.events.stop.connect(lambda _: self.on_stop())
        gdb.events.exited.connect(lambda _: self.on_exit())

    def on_continue(self):
        if self.enabled and self.is_running():
            os.system('clear')
            print(divider('Output/messages', True))
        self.pre_display = False

    def on_stop(self):
        if self.enabled and self.is_running():
            self.display()

    def on_exit(self):
        pass

    def load_modules(self, modules):
        self.modules = []
        for module in modules:
            info = Dashboard.ModuleInfo(self, module)
            self.modules.append(info)

    def redisplay(self):
        if self.is_running():
            os.system('clear')
            self.display()

    def inferior_pid(self):
        return gdb.selected_inferior().pid

    def is_running(self):
        return self.inferior_pid() != 0

    def display(self):
        Dashboard.update_term_width()
        # fetch lines
        lines = []
        for module in self.modules:

.gdb/dashboard  view on Meta::CPAN

        def invoke(self, arg, from_tty):
            arg = Dashboard.parse_arg(arg)
            if arg == '':
                status = 'enabled' if self.dashboard.enabled else 'disabled'
                print('The dashboard is {}'.format(status))
            elif arg == 'on':
                self.dashboard.enabled = True
                self.dashboard.redisplay()
            elif arg == 'off':
                self.dashboard.enabled = False
            else:
                msg = 'Wrong argument "{}"; expecting "on" or "off"'
                Dashboard.err(msg.format(arg))

        def complete(self, text, word):
            return Dashboard.complete(word, ['on', 'off'])

    class LayoutCommand(gdb.Command):
        """Set or show the dashboard layout.
Accepts a space-separated list of directive. Each directive is in the form
"[!]<module>". Modules in the list are placed in the dashboard in the same order
as they appear and those prefixed by "!" are disabled by default. Omitted
modules are hidden and placed at the bottom in alphabetical order. Without
arguments the current layout is shown; enabled and disabled modules are properly
marked."""

        def __init__(self, dashboard):
            gdb.Command.__init__(self, 'dashboard -layout', gdb.COMMAND_USER)
            self.dashboard = dashboard

        def invoke(self, arg, from_tty):
            arg = Dashboard.parse_arg(arg)
            directives = str(arg).split()
            if directives:
                self.layout(directives)
                if from_tty and not self.dashboard.is_running():
                    self.show()
            else:
                self.show()

        def show(self):
            for module in self.dashboard.modules:
                style = R.style_high if module.enabled else R.style_low
                print(ansi(module.name, style))

        def layout(self, directives):
            modules = self.dashboard.modules
            # reset visibility
            for module in modules:
                module.enabled = False
            # move and enable the selected modules on top
            last = 0
            n_enabled = 0
            for directive in directives:
                # parse next directive
                enabled = (directive[0] != '!')
                name = directive[not enabled:]
                try:
                    # it may actually start from last, but in this way repeated
                    # modules can be handler transparently and without error
                    todo = enumerate(modules[last:], start=last)
                    index = next(i for i, m in todo if name == m.name)
                    modules[index].enabled = enabled
                    modules.insert(last, modules.pop(index))
                    last += 1
                    n_enabled += enabled
                except StopIteration:
                    def find_module(x):
                        return x.name == name
                    first_part = modules[:last]
                    if len(filter(find_module, first_part)) == 0:
                        Dashboard.err('Cannot find module "{}"'.format(name))
                    else:
                        Dashboard.err('Module "{}" already set'.format(name))
                    continue
            # redisplay the dashboard
            if n_enabled:
                self.dashboard.redisplay()

        def complete(self, text, word):
            all_modules = (m.name for m in self.dashboard.modules)
            return Dashboard.complete(word, all_modules)

    class StyleCommand(gdb.Command):
        """Access the stylable attributes.
Without arguments print all the stylable attributes. Subcommands are used to set
or print (when the value is omitted) individual attributes."""

        def __init__(self, dashboard, prefix, obj, attributes):
            self.prefix = prefix + ' -style'
            gdb.Command.__init__(self, self.prefix,
                                 gdb.COMMAND_USER, gdb.COMPLETE_NONE, True)
            self.dashboard = dashboard
            self.obj = obj
            self.attributes = attributes
            self.add_styles()

        def add_styles(self):
            this = self
            for name, attribute in self.attributes.items():
                # fetch fields
                attr_name = attribute.get('name', name)
                attr_type = attribute.get('type', str)
                attr_check = attribute.get('check', lambda _: True)
                attr_default = attribute['default']
                # set the default value (coerced to the type)
                value = attr_type(attr_default)
                setattr(self.obj, attr_name, value)
                # create the command
                def invoke(self, arg, from_tty, name=name, attr_name=attr_name,
                           attr_type=attr_type, attr_check=attr_check):
                    new_value = Dashboard.parse_arg(arg)
                    if new_value == '':
                        # print the current value
                        value = getattr(this.obj, attr_name)
                        print('{} = {!r}'.format(name, value))
                    else:
                        try:
                            # convert and check the new value
                            parsed = ast.literal_eval(new_value)